lib: Add bitmap test

This adds a test for the bitmap. During the testing I also removed
some bugs that were present in the bitmap implementation.

2 files changed, 78 insertions, 0 deletions

diff --git a/src/lib/tests/CMakeLists.txt b/src/lib/tests/CMakeLists.txt
index b1259fa8..99df7232 100644
--- a/src/lib/tests/CMakeLists.txt
+++ b/src/lib/tests/CMakeLists.txt
@@ -3,6 +3,7 @@ get_filename_component(src_folder "${tmp}" NAME)
 
 create_test_sourcelist(${src_folder}_tests test_suite.c
                        # Add new tests here
+                       bitmap_test.c
                        du_buff_test.c
 )
 
diff --git a/src/lib/tests/bitmap_test.c b/src/lib/tests/bitmap_test.c
new file mode 100644
index 00000000..4d2d0c73
--- /dev/null
+++ b/src/lib/tests/bitmap_test.c
@@ -0,0 +1,77 @@
+/*
+ * Ouroboros - Copyright (C) 2016
+ *
+ * Test of the bitmap
+ *
+ *    Sander Vrijders <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include "bitmap.c"
+#include <time.h>
+#include <stdlib.h>
+
+#define BITMAP_SIZE 200
+
+int bitmap_test(int argc, char ** argv)
+{
+        struct bmp * bmp;
+        size_t bits = BITMAP_SIZE;
+        ssize_t id;
+        int i;
+        ssize_t r;
+        ssize_t offset = 100;
+
+        srand(time(NULL));
+
+        bmp = bmp_create(bits, offset);
+        if (bmp == NULL)
+                return -1;
+
+        if (bmp_destroy(bmp))
+                return -1;
+
+        bmp = bmp_create(bits, offset);
+        if (bmp == NULL)
+                return -1;
+
+        for (i = offset; i < BITMAP_SIZE + 5 + offset; i++) {
+                id = bmp_allocate(bmp);
+                if (!bmp_is_id_valid(bmp, id))
+                        continue;
+
+                if (id != i)
+                        return -1;
+        }
+
+        for (i = 0; i < BITMAP_SIZE + 5; i++) {
+                r = (ssize_t) (rand() % BITMAP_SIZE) + offset;
+
+                if (bmp_release(bmp, r))
+                        return -1;
+
+                id = bmp_allocate(bmp);
+                if (!bmp_is_id_valid(bmp, id))
+                        continue;
+                if (id != r)
+                        return -1;
+        }
+
+        if (bmp_destroy(bmp))
+                return -1;
+
+        return 0;
+}